Extractor base portion



FIG. 1 is a front perspective view of an extractor base portion which embodies our design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof; and,

FIG. 6 is a top view. 

The ornamental design for an extractor base portion, as shown and described. 